Poured waterproof insulated bus duct

Poured waterproof insulated bus ductIt is a busbar system composed of metal plates (steel plates or aluminum plates) as protective shells, conductive bars, insulation materials, and related accessories. It can be made into a plug-in type enclosed bus duct with plug-in junction boxes at regular intervals, or a feeding type enclosed bus duct without a junction box in the middle. In the power supply system of high-rise buildings, the power and lighting lines are often set separately, and the bus duct is installed vertically along the wall in the electrical shaft as the main power supply line. According to the purpose, a busbar trunking generally consists of a starting busbar trunking, a straight through busbar trunking (with and without sockets), an L-shaped vertical (horizontal) bent busbar, a Z-shaped vertical (horizontal) offset busbar, a T-shaped vertical (horizontal) three-way busbar, an X-shaped vertical (horizontal) four-way busbar, a variable capacity busbar trunking, an expansion busbar trunking, a terminal head, a terminal junction box, a plug-in box, related accessories and fastening devices of the busbar trunking. Bus ducts can be divided into three types according to insulation methods: air type plug-in bus ducts, dense insulation plug-in bus ducts, and high-strength plug-in bus ducts.

The fully enclosed resin cast waterproof bus duct is a non-metallic shell bus duct. The waterproof bus duct is made by mixing a specially formulated composite resin and a quantitatively selected mixed material to create a high-performance insulation material. The copper bus is directly cast and sealed. There are no air gaps, no chimney effect, and busbar burrs or overloads will not cause short circuits. The insulation material does not contain halogens, and flame retardant does not release harmful substances. The enclosure protection level is IP68, which is not only water-resistant, fire-resistant, and corrosion-resistant.

Installation inspection of bus duct: Check whether the bus housing is intact, whether there is damage or absence, check if the bus housing bolts are loose, and ensure that the bolt connection is reliable; Check that the bus plug interface is closed; Using a 500 volt megohmmeter to measure insulation resistance, its resistance value should not be less than 20 meters per day, Ω

Bus duct connection: The bus duct bracket must be installed firmly, and the bus duct should be placed accurately according to the number of segments, phase sequence, number, direction, and installation marks. The bus duct segments should be connected to each other, and adjacent segments of the bus duct should be directed towards the bus conductor and shell. After connection, they should not be subjected to mechanical stress

Poured waterproof insulated bus ductSimilarity of processing schemes during operation

(1) Before the defects are not handled, contact the provincial middle note to properly reduce the active and reactive loads of No. 5 generator. The electrical operation attendant should strengthen the patrol inspection, do a good job in continuous temperature measurement, install a temporary exhaust fan, blow outside to cool down, and try to control the temperature at the overheated place.

(2) There are 24 fixed bolts on each side of the flange of the flexible junction box at both ends of the expansion joint. Baoshan Busway Factory plans to install connecting small aluminum bars between each pair of bolts one by one, in order to implement diversion of the concealed crossover aluminum bars and reduce heat generation.

Installation rules for busbars: handling and storage slots; Busbars shall not be suspended or tied with bare steel wire ropes, and busbars shall not be arbitrarily stacked or dragged on the ground No other work should be done on the shell, and a multi-point lifting forklift will be used to smooth the shovel without damaging the bus duct Busbars should be stored in a warehouse, dry, clean, and free of corrosive gases Soft packaging should be placed between the top and bottom of the bus and properly stored

Check for any dirt entering the dense bus duct and any leakage issues. If any problems are found, they should be dealt with immediately. Huaihua waterproof bus duct has not left any safety hazards. If a thermal breakdown problem is found, the bus duct should be removed section by section or checked section by section with a voltage tester to find common fault points and replace them with new dense bus ducts or re bundle them.

Used on production lines for activities, waterproof bus duct manufacturers supply power to motors or handheld tools that move with the production line, or for operators to move back and forth within a 5m range to complete specific operations. Bus ducts can only be installed in open and visible locations. If there is a channel and the following conditions are met, it is allowed to be installed behind the distribution panel. No overcurrent device is installed on the bus duct except for individual lamps. The space behind the plate does not need to be used as an air conditioning space. buswayClosed non ventilated type. The installation of bus ducts facilitates the maintenance of joints and accessories between each section. Bus ducts should not be installed in places that are prone to serious mechanical damage, corrosive steam, or crane loading and unloading of goods. A device specially manufactured for a certain purpose.

Product performance:

1. Usage conditions
ambient temperature
Upper limit:+40 ℃
Lower limit: -25 ℃
Altitude: below 2000m
humidity
The relative humidity should not exceed 50% at the highest temperature of+40 ℃; When the temperature is low, it is allowed to have
Higher relative humidity
Condensation conditions: A busbar system can be composed of multiple busbar units;

(1) Linear busbar unit
Linear busbar unit is used to extend power supply and distribution lines. It is a closed busbar with a tap changer and a plug-in box used to distribute power loads.
(2) Starting busbar unit
The starting busbar unit is matched with the starting incoming box to form the connection component between the busbar and the cable. The starting busbar unit can also be connected to transformers or distribution cabinets.
(3) Expansion busbar unit
The expansion busbar unit is used to absorb the axial variation of the busbar caused by thermal expansion. When the length of the busbar exceeds 80m, a section of expansion busbar unit should be installed.
(4) Variable diameter busbar unit
Variable diameter busbar units are used to connect different rated current units in the same system, in order to make the power supply of the entire busbar system more economical and reasonable.
(5) Various busbar bending units
There are four types of busbar bending connection units: L-shaped, T-shaped, Z-shaped, and+- shaped. They are used for connecting and changing the direction of horizontal and vertical power supply and distribution, and can flexibly connect busbar systems.

1. Installation location: indoor, outdoor
2. Insulation resistance: The insulation resistance value of each enclosed busbar unit should be greater than or equal to 100M Ω (2500V megohmmeter).
3. Dielectric strength: Each section of the enclosed busbar undergoes a 1-minute power frequency dry test voltage withstand test before leaving the factory.
The power frequency withstand voltage and lightning impulse withstand voltage values meet the standards.
4. Grounding system: Complies with the requirements of IEC364-5-54 for grounding systems.
5. Protection level: Indoor type: IP40; Outdoor type: IP43, IP55.